Smoke-consuming furnace



"G.A.BAR,TH,

SMOKE ONSUMING FURNACE'.

Patented July 1 8, y1882.

uw, Model.)

vUNITED STATES PATENT OFFICE.

SMOKE-consomme FURNACE.

SPECIFICATION forming part ofLetters Patent No. 261,422, dated July 18, 1882.

Application led May 15, 1882. (No model.)

To all 'whom it may concern Be it known that I, GUsTAVE A. BARTH, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Smoke-Consuming Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this speciiication, in which- Figure 1 is a front view of a furnace with the Wall ofthe fire-chamber broken away. Fig. 2 is a side view with part of the wall broken away, and Fig.3 is a detail view.

jets of superheated steam My invention relates to a device whereby combined with'air are discharged into the fire-chamber to assist combustion.

A. represents part ot' the boiler 5 B B, the side Walls of the furnace; U, the bridge-Wall; D, the combustion-chamber; E, the grate-bars, and F the ash-pit. Y

Gis a steam-pipe leading from the boiler and connecting with a pipe, H, ot' larger dialneter Within .the tire-chamber E. The pipe H communicates by with a transverse pipe, J, beneath the gratebars, and the pipe J communicates by means of vertical pipes K with a parallel pipe, L, located in the combustion-chamber just in front of the bridge-wall. This pipe J also communicates by means ot' horizontal pipes M and vertical pipes N with a pipe,O, which is located in the combustion-chamber at the front end of the furnace. The vertical pipes K and meansot' a smaller pipe, I,

N are provided with injectors P Q and air-receiving funnels R S, located beneath the gratebars, as shown. The mouths of the funnels are covered with wire-gauze to exclude cinders, &c. The pipes L and O have perforations l o pointing in different directions, as shown by the arrows, biued air and superheated steam are directed down upon the fire in all directions to assist combustion. The pipe O also has one series of perforations, o', pointing back over the bridge-wall, so that jets of steam and air are discharged in this direction to assist the draft. The steam-pipe G is provided with a regulating-valve, G. allow for the expansion of the steam as it becomes super-heated in passing through the firechamber.

I claimp j 1. The combination of steam-pipe G, steampipe H beneath the boiler, vertical pipes K K, having air-tunnels R R, horizontal combined air and superheated steam pipe L, having oriiices l, and connecting-pipes I J, as set forth.

2. The combination of boiler A, pipes Gr, H, I, J, K, LM, N, and O, injectors P Q, and funnels R S, the pipes L O having perforations lo o', all substantially as and for the purpose set forth.

GUSTAVE A. BARTH.

Witnesses:

SAML. KNIGHT, GEo. H. KNIGHT. v

so that the jets of com-- The pipe H is made large t0 

